Abdominal wheel



FIG. 1 is a perspective view of an abdominal wheel showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a sectional view of the abdominal wheel shown in FIG. 2 and which is taken along view line A-A. 

CLAIM The ornamental design for an abdominal wheel, as shown and described. 